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Rows

seric

Grasshopper

Points: 24
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September 10, 2007 at 12:17 am

#180946

Hi,
anybody got anyideas about how to pull only even rows from a table into a dynamic cursor ?

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Gail Shaw SSC Guru Points: 1004504 More actions · Answer 1

Define 'even rows'

Do you have an identity column and only want rows where the id is 2,4,6,... ?

Do you want every other row as defined by a certain order by?

Off the point of the question, why do you need a cursor, let alone a dynamic one?

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass

Andras Belokosztolszki SSC-Insane Points: 22031 More actions · Answer 2

You could use a query with Row_Number like:

SELECT  a
FROM    ( SELECT    ROW_NUMBER() OVER ( ORDER BY a ) AS RowNr
                  , a
          FROM      @evenRows
        ) AS x
WHERE   x.RowNr % 2 = 0

Assuming in the above that you want to order on a, and then get every second row.

If you describe your problem in more detail we may be able to help better

Andras

Andras Belokosztolszki, MCPD, PhD
GoldenGate Software

seric Grasshopper Points: 24 More actions · Answer 3

Hi

Thanks for the replies. It was just somthing i had been playing around with. Yes i was thinking even rows in terms of 2,4,6,8 etc.

Gail Shaw SSC Guru Points: 1004504 More actions · Answer 4

Even, in terms of what? Row position based on a certain order, an identity column, something else ????

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass